v0.33.0

Likely to cause new Flow errors:

• Its now an error to add mixed to number

New features:

• suppress_comment now defaults to matching // $FlowFixMe if there are no suppress_comments listed in a .flowconfig
• The Flow server no longer restarts itself when a package.json file is changed
• The Flow server no longer restarts itself if a libdef file is touched, but not actually changed
• Added support for using Iterables with Promise.all() (thanks @vkurchatkin!)

Notable bug fixes:

• Fixed an issue where some predicates could cause Flow to crash
• Fixed an issue where we weren't propertly looking things up on Function.prototype and Object.prototype
• Fixed an issue where Flow could crash when extracting coverage on empty types
• Fixed an issue where long paths that are ignored could give a bunch of warnings on Windows
• Fixed an issue where flow get-def wouldn't hop to the location of a type coming through an import type
• Fixed an issue with dictionary types where using an any-typed variable as a computed-property lookup results in the wrong property-value type
• Fixed some issues where Flow wouldn't allow defininition of properties or methods called "static" on classes
• Fixed an issue where Flow wouldn't permit throws at the toplevel of a module
• Fixed an issue where adding a file to [libs] with an extension not listed in module.file_exts, it would previously be silently ignored
• Fixed an issue where import * as on a declare module.exports: any; libdef would not result in a module with every possible named export
• Fixed a parsing issue where "JSX attributes must only be assigned a non-empty expression" syntax errors sometimes point to the wrong line
• Fixed parsing of setter methods with destructured parameters
• Fixed a parsing issue where it wasn't possible to use get or set in object short notation
• Fixed a parsing issue where we previously weren't allowing strings in async method names: x = { async 123() { await y; } }
• Fixed an issue where the parser previously wouldn't recognize the u regex flag

Misc:

• Various built-in libdef improvements
• Various significant shared memory optimizations
• When a package.json key is read by Flow during module resolution, don't wrap it in quotes
• Added parser (but not yet typechecker) support for new.target
• Added --pretty flag to all commands that have a --json flag
• Flow now prints an exception instead of segfaulting if there is a heap overflow
• Only print JSON for flow coverage when --json is passed (thanks @aackerman!)

Parser breaking changes:

• Removed 'lexical' property from SwitchStatement
• Removed guardedHandlers from TryStatement
• Use AssignmentPattern for function param defaults to match ESTree
• Use RestElement for function rest params to match ESTree
• Fixed the location info for ExpressionStatement
• Fixed the location info for CallExpression and MemberExpression